Molding machine



Feb. s, 1925; 1 n@ J. A. GORRELL i W' MOLDING MACHINE @iA/20:11. 'new Feb. 3, l1925- Y 1,525,178

J. A. GORRELL MOLDING MACHINE Filed July 21, 1923 2 Shoots-Sheet 2 Patented Feb. 3, i925.

UNITED STATES JOE ALLEN GORRELL, OF LIMA, OHIO.

MOLDNG- MACHINE.

Application filed .Tuly 21, 1923. Serial No. 653,011. v

T0 all whom t may concern.'

Be it known that l, Jon A. GonnnLL, a citizen of the United States of America, and resident of Lima, in the county of Allen and State of Ohio, have invented certain new and useful Improvements in Molding Machines, of which the following is a specification.

This invention relates to molding machines, and particularly to a machine for molding sash weights.

It is the purpose of this invention to provide novel means whereby a mold with the cores or patterns may be vibrated to pack or ram the sand; the said invention also including novel means for withdrawingthe patterns from the mold and permitting the mold to be removed and poured, according to the usual processes, although, in this connection, it may be stated that it is the purpose of the inventor to have the top of the mold scrape down to the top of the pattern gate, a step of the process which will form a basin in the top of the mold, into which the molten metal will be directed by a runner box preferably protected by dried mud prior to its being used.

It is a further object of this invention to produce a machine having means whereby the patterns and mold or flask are vibrated or jarred to cause the packing of the sand around the patterns.

It is a further object of this 'invention to produce novel means for adjusting' the flask or mold vsupport with relation to the patterns in order that the patterns may project, to a greater or less extent, into the mold to increase o-r diminish the cavities therein that are to be filled with metal during the casting process, for it is by this latter means that sash weights of different sizes may be produced, that is to say, the sash Weights will be of the same cross sectional coniiguration, but will be of different lengths.

Of course, it is the purpose of the inventorA also to produce a machine in which patterns of different diameters may be employed, but in those cases, the lifting plate which carries the patterns will be changeable to suit particular requirements.

It is a further object of this invention to produce a molding device of the character indicated in which, by an adjustment of the lifting plate supporting means, the weight In describing the invention in detail,

reference will be had to the accompanying drawings forming part of this application wherein like characters denote corresponding parts in the several views, and in which- Figure 1 illustrates a sectional Viewv of a sash weight molding machine embodying the invention;

Figure 2 illustrates a view in elevation thereof;

Figure 3 illustrates a sectional view on the line 3 3 of Fig. 2 on an enlarged scale; and

Figure 4 illustrates an enlarged detail view of a bracket.

ln these drawings, 5 ldenotes a suitable base having an upstanding cylinder 6 thereon 'or made as a part thereof, the said cylinder being provided with a pressure delivery port 7 and an exhaust port 8; it being the purpose of the inventor that air or steam pressure shall be supplied to the bote tom of the cylinder for raising the piston 9 which operates therein, so that when the said piston has been raised to uncover the exhaust port 8, pressure will escape and permit the piston to descend with a jar which will so vibrate the sand in the mold carried by the mechanism, as will presently appear, in order that the sand may be packed around the patterns.

rIhe piston 9 is hollow and it forms a cylinder in which a piston 10 is movable, the said piston having a piston rod 11 projecting through the head 12 thereof. The wall of the piston 9 has al duct 13 leading to the interior below the piston 10, and a duct 14 leading to the'interior above the piston. Pressure supply pipes 15 and 16 connect to the ducts 13 and 14 respectively and are under control of a valvel'? by which pressure vcan be delivered Vfor raisingthe piston 10 or for forcing it down, as Will presently appear.

The or head 18 to Which a lifting plate19 is connected and by Which the lifting plate is supported. The lifting plate has avplurality of patterns 20 which projectvthrough apertures lsuch as` 21 `in the stripping plate 22. The upper ends `of the patterns have 1 gates 23, andwhen a flask or mold has been placedon the ,stripping plate and filled with sand, the mechanism Vis vibrated by the resulting from lits coming to an abrupt stop ven its'descent, and after thejarring operareciprocation .of the pis'ton 9 .and the jar `by I numbers representing the Weight by `vpounds ofthe sash Weight that will be cast when the patterns are in the different posiftions' Ofadjustment. The brackets are movable vertically in guides` 27 that are secured on the outer surface of the frame 28, and after air has been admitted to raise the piston l() with the patterns to the proper degree to produce sash'weights of the required l Weight, a pin 29 is applied to `anl aperture l of each bracket and the 'pin is applied toy the aperture that is in lineV with the upper edge of the stripping plate, thus causing the Alifting plate and patterns tol be held against movement with relation to 4the stripping 'plate vvhile sand is being packed in the `flasks or molds. `The provision of the pins inthe relations stated guards against any movement of the "patterns in the molds Which'might tend to reduce the degree of their projection into the molds.

`After the sand has been packed, the pins are removed and air is admitted through Athe duct le to operate on the top of the "piston 10, thus causing. the patterns to be Withdrawn from the mold.

If the patterns Were raised until the aperture marked l were just above the stripping plate and the pins were inserted 1n that aperture, the apparatus would form molds Vthat would produce sash Weights Weighing l pounds, and so the result would be proportional if apertures numbered 7 were adjusted in the manner 4stated with relation to the stripping plate.

The table 30 is moved up and doWn With the piston 9V as it is a part of the piston 9, or. it Will be so constructed as to be at-fy tached to the piston 9, and this table suppiston 11 is provided yvith a platt`- portslthe frame 28 to which reference has been made, and the said: frame has" corner posts v3l that are secured to the table by fastenings 32, such as bolts or the like, it beingbbserved that the stripping plate reciprocates in the frame in order that the patterns may be moved up and down through the stripping plate. The posts of the framefh'a've'their inner surfaces provided with ribs that constitute guides tc be engaged by the shoes 34 at the. corners of the stripping plate,and"by'this means, thehstripping plate is guided vertically inthe frame. y y

llChegeye of the Weight is formed by'rtwo y'half chills.

I claim: n l. ln'a moldingmachine, a tablep'means for vibrating the table vertically, alifting plate, patterns extending' upwardlyftherefrom, a stripping plate-through which the patterns project, means, for raising andzlovvering the lifting plate ,independently of the `stripping plate, means for 4supporting the lifting platewith relation tothe stripping plate independently of the means for movling the lifting plate, and` 'meansyfor determining the size ofthe casting by l'the position of the lifting plate with relation to the stripping plate.

2. ln a molding 4machine,ja table,a 'frame thereon,a strippingpplate supported by the table, a -lifting plate movable With relation to the table and'stripping plate, means, for retaining the lifting` plate in Ldilferent positions of adjustment Vwith relation to the stripping plate, means for moving the liftfing plate, and means for vibrating the table, substantially` as described.

3. lni a molding machine, a table having a cylindrical extension, a cylinder in 'Which the cylindrical extension is movable, pressure applying means'for delivering pressure to the cylinder under the cylindrical eX- tension whereby vthe table is Vvibrated, a piston operatingin the ,cylindricalV exftension, means for delivering pressure to'the interior of the cylindricalextension' above and below the piston, a lifting platesupported by the piston, vpatterns carried bythe lifting plate, a stripping plate i through which the patterns extend, and meansrfor fastening the liftingl plate andfstripping. plate together at diferent'positions of`adjustment.

Ll. In a molding machine, a table having a cylindrical extension, a cylinder in lwhich the cylindrical extension is movable, pressure applying means jfor delivering pressure to the cylinder' under thecylindric'al eXtension whereby the4 table isV viluatedy'a piston operating in the cylindrical extension', means for delivering pressure to the interior of the cylindrical extension above and below the piston, a lifting plate supported by the' piston, patterns carried by the lifting' plate, a

stripping plate. through which the patterns eXtend, means for fastening the lifting plate and stripping plate together at different I positions of adjustment, and means for determning the size of the casting produced by the cavity formed by the patterns, substantially as described.

5. In a molding machine, a table, means l0 for vibra-ting the table vertically, a frame supported on the table, a lifting plate guided by the frame, power applying means for moving the lifting plate vertically, a stripping plate supported by the frame, hangers for holding the lifting plate in 'diiferent positions of adjustment With relation to the stripping plate, and patterns extending upwardly from the lifting plate through the stripping plate, substantially as described.

JOE ALLEN GORRELL. 

